Re^2: Debugging CGI/PERL

[rvosa]

It means that the output is not well formed. This can either be: i) you made a mistake in the response header, which needs to start with Content-type: text/html and two line breaks (but proper usage of any CGI module will take care of that); ii) something is erroneously printed into your response before this header (a debug print for example).

[EvanK]

I'm nitpicking I know, but the response header can start and end with many directives...the only absolutely required one is Content-Type (and it must indeed end with two linebreaks). For example, this is perfectly legal:

Set-Cookie: USER_COOKIE=blahblahblah; path=/; domain=.example.com
Content-Type: text/plain
Transfer-Encoding: chunked
Content-Encoding: gzip

This is my content...

Of course, if the OP is already using CGI (which he should be), then you can simply use the CGI->header() method:

print CGI->header('text/plain');